| 摘要 |
A window middle frame according to the present invention has a reinforcing member formed therein, having both sides positioned on an indoor and an outdoor side respectively, and having a top and a bottom side, wherein the reinforcing member consists of a first, a second, and a third reinforcing member so that the both sides can have large thicknesses and the top and the bottom side can have thickness to allow the top and the bottom side to be forcibly fastened by screws, so the window middle frame can have a wind pressure resistance required for a high-rise building and can be easily constructed to improve work efficiency. In addition, the window middle frame according to the present invention has a pair of rails (guides) formed on the top side thereof and allowing a window to slide to be opened or closed thereon, wherein the pair of rails are formed to be stepped to naturally discharge rainwater or foreign matters to the outdoor side. According to the present invention for the above effect, a window middle frame (100) has at least one reinforcing member (110) therein and partitions the inner space part of a window frame (200) into at least two parts when the window frame (200) is mounted on the inner side of an opening to mount a window in a wall, wherein the reinforcing member (110) includes: a first reinforcing member (111) having a ���-shaped cross section; a second reinforcing member (112) having a ���-shaped cross section, and having both ends coupled to be overlapped with both ends of the first reinforcing member (111); and a third reinforcing member (113) having a cross section which surrounds the first reinforcing member (111) and the second reinforcing member (112) and which has one side partially opened. |
